[gtk-doc] Revert "highlight: make style-file writable before appending"

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 9467f121fb728866a2366df65805aea1a587ac7e
Author: Michael Catanzaro <mcatanzaro posteo net>
Date:   Tue May 21 20:59:01 2019 +0000

    Revert "highlight: make style-file writable before appending"
    
    This reverts commit f87317d0981e3a4711cd394834a67eb419d399fe

 gtkdoc/highlight.py | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/gtkdoc/highlight.py b/gtkdoc/highlight.py
index ded674e..6023d33 100644
--- a/gtkdoc/highlight.py
+++ b/gtkdoc/highlight.py
@@ -22,7 +22,6 @@
 """
 Highlight sourcecode snippets.
 """
-import os, stat
 
 from pygments import highlight
 from pygments.lexers import CLexer
@@ -46,6 +45,5 @@ def highlight_code(code, lang='c'):
 
 
 def append_style_defs(css_file_name):
-    os.chmod(css_file_name, stat.S_IWRITE)
     with open(css_file_name, 'at', newline='\n', encoding='utf-8') as css:
         css.write(HTML_FORMATTER.get_style_defs())